Document unit testing with IHttpClientFactory

[scottaddie]

There's a partial example at https://github.com/aspnet/HttpClientFactory/wiki/Consumption-Patterns#unit-testing. This content needs to be added to Docs.

See the xUnit & Moq sample at https://github.com/glennc/httpclientfactorysample/tree/master/test/WebUI.Tests.

[jphellemons]

FYI: The first url redirects to https://docs.microsoft.com/nl-nl/aspnet/core/fundamentals/http-requests?view=aspnetcore-2.1

[scottaddie]

@jphellemons Thanks for pointing this out. All of the content on that Wiki page, except for the unit testing, was moved to Docs.

[jphellemons]

@scottaddie the unit testing part was exactly what I was looking for.

[scottaddie]

@jphellemons Here's a screenshot of what that Wiki page used to contain for unit testing:

See also the link above to the xUnit & Moq sample.

[Rick-Anderson]

@guardrex please suggest a doc this issue should be attached to.

[guardrex]

@Rick-Anderson Perhaps none because we only keep two unit tests topics (Razor Pages tests & Test controllers), and this doesn't look like it fits neatly into either of them. I think Scott's plan was to make a new topic for this under the Test, debug, and troubleshoot node.

[scottaddie]

This should be a new topic.

[Rick-Anderson]

@scottaddie we don't have the resources to maintain our current testing docs, so I'm closing this issue.

[lloydjatkinson]

This is still a valid request as real world code is unit tested.

[martincostello]

I wrote up a blog post for a helper library for this sort of thing a few years ago if it's of any help to you: https://tech.justeattakeaway.com/2017/10/02/reliably-testing-http-integrations-in-a-dotnet-application/